18173920

素因数分解:

$2^5\times 5^1\times {\mathrm{97}}^1\times {\mathrm{1171}}^1$

素因数の和:1283

約数の個数: 48

約数和(自身を含む): 43415568

約数和(自身を除く): 25241648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 97, 160, 194, 388, 485, 776, 970, 1171, 1552, 1940, 2342, 3104, 3880, 4684, 5855, 7760, 9368, 11710, 15520, 18736, 23420, 37472, 46840, 93680, 113587, 187360, 227174, 454348, 567935, 908696, 1135870, 1817392, 2271740, 3634784, 4543480, 9086960, 18173920]

約数ペア:

[(1, 18173920), (2, 9086960), (4, 4543480), (5, 3634784), (8, 2271740), (10, 1817392), (16, 1135870), (20, 908696), (32, 567935), (40, 454348), (80, 227174), (97, 187360), (160, 113587), (194, 93680), (388, 46840), (485, 37472), (776, 23420), (970, 18736), (1171, 15520), (1552, 11710), (1940, 9368), (2342, 7760), (3104, 5855), (3880, 4684)]